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Geforce GTX 690 vs Geforce GTX 770

Intro

The Geforce GTX 690 features a GPU clock speed of 915 MHz, and the 2048 MB of GDDR5 RAM runs at 1502 MHz through a 256-bit bus. It also is comprised of 1536 Stream Processors, 128 TAUs, and 32 Raster Operation Units.

Compare all that to the Geforce GTX 770, which comes with a clock frequency of 1046 MHz and a GDDR5 memory frequency of 1753 MHz. It also features a 256-bit memory bus, and uses a 28 nm design. It is comprised of 1536 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 770 230 Watts
Geforce GTX 690 300 Watts
Difference: 70 Watts (30%)

Memory Bandwidth

The Geforce GTX 690, in theory, should perform much faster than the Geforce GTX 770 in general. (explain)

Geforce GTX 690 384512 MB/sec
Geforce GTX 770 224384 MB/sec
Difference: 160128 (71%)

Texel Rate

The Geforce GTX 690 is a lot (approximately 75%) more effective at AF than the Geforce GTX 770. (explain)

Geforce GTX 690 234240 Mtexels/sec
Geforce GTX 770 133888 Mtexels/sec
Difference: 100352 (75%)

Pixel Rate

The Geforce GTX 690 should be a lot (more or less 75%) more effective at FSAA than the Geforce GTX 770, and also should be able to handle higher resolutions while still performing well. (explain)

Geforce GTX 690 58560 Mpixels/sec
Geforce GTX 770 33472 Mpixels/sec
Difference: 25088 (75%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Geforce GTX 690

Amazon.com

Geforce GTX 770

Amazon.com

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

Model Geforce GTX 690 Geforce GTX 770
Manufacturer nVidia nVidia
Year April 2012 May 2013
Code Name GK104 GK104
Fab Process 28 nm 28 nm
Bus PCIe 3.0 x16 PCIe 3.0 x16
Memory 2048 MB (x2) 2048 MB
Core Speed 915 MHz (x2) 1046 MHz
Shader Speed 915 MHz (x2) 1046 MHz
Memory Speed 1502 MHz (6008 MHz effective) (x2) 1753 MHz (7012 MHz effective)
Unified Shaders 1536 (x2) 1536
Texture Mapping Units 128 (x2) 128
Render Output Units 32 (x2) 32
Bus Type GDDR5 GDDR5
Bus Width 256-bit (x2) 256-bit
DirectX Version DirectX 11.0 DirectX 11.0
OpenGL Version OpenGL 4.2 OpenGL 4.3
Power (Max TDP) 300 watts 230 watts
Shader Model 5.0 5.0
Bandwidth 384512 MB/sec 224384 MB/sec
Texel Rate 234240 Mtexels/sec 133888 Mtexels/sec
Pixel Rate 58560 Mpixels/sec 33472 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the card's interface width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Comments

2 Responses to “Geforce GTX 690 vs Geforce GTX 770”
Anonymous says:
If only I had more info...
Nigga says:
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